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No. 568,773. Patented Oct. 6, 1896;

W-itnesses. Inventors 26 v I I Q AEZ QW UNITED STATES PATENT OFFICE.

ALBERT S. LAMBERT AND EDMUND HOFFMAN, OF BRIDGETON, NEWV JERSEY, ASSIGNORS, BY MESNE ASSIGNMENTS, TO THE PRACTICAL CLOSURE COMPANY, OF SAME PLACE.

CLOSURE.

SPECIFICATION forming part of Letters Patent No. 568,773, dated October 6, 1896. Application filed September 27, 1895. Renewed July 22, 1896. Serial No. 600,176. (No model.)

To aZZ whom it may concern.-

Be it known that we, ALBERT S. LAMBERT and EDMUND HOFFMAN, citizens of the United States, residing at Bridgeton, in the county of Cumberland, in the State of New Jersey, have invented a certain new and useful Improvement in Closures, of which the following specification is a true and exact description, reference being had to the accompanying drawings, which form a part thereof.

Our invention relates to closures or stoppers adapted to be used in connection with bottles, cans, or similar receptacles, and has for its object to provide a simple and efficient closure or stopper acting both by the ordinary elastic method of a cork and preferably, also, by a positively-locking act-ion, our invention consisting of a device whereby an elastic cork or stopper is combined with a metallic cap of peculiar construction.

The nature of our improvements will be best understood as described in connection with the drawings, in which they are illustrated, and in which- Figure 1 is a central longitudinal section through a bottle-neck closed by our improved stopper. Fig. 2 is a plan view of the stopper; Fig. 3, a perspective sectional view of a bottie-neck adapted for use in connection with a stopper; and Fig. 4:, a central section through the stopper, taken at right angles to the section shown in Fig. 1 and showing the bottleneck and the elastic part of the stopper in dotted lines.

A indicates the bottleneck, which in the present construction is shown as provided with two oppositely-arranged downwardlyextending grooves A, terminating in circumferential grooves A the top walls A of which are preferably sloped downward, as indicated in Figs. 1 and 3.

B indicates the elastic stopper, which may be of cork, rubber, or any other suitable material. The metal cap in which the elastic stopper is secured is formed of two parts, one a ring or cylinder, C, provided at its top end with an inwardly-extending circumferential rim C and provided'in its lower portion with two outwardly-extending lugs C C. The other part, D, of the metallic cap is, in the process of forming the cap, made with a central circular depressed bead D, adapted to fit inside of the rim 0 of the ring 0 and to be pressed downward and outward, as indicated in Fig. 1, so as to clamp the arm C between it, the said bead D, and the top of the cap D. Said cap is also provided with a downwardly extending circumferential rim D which is preferably corrugated, as shown, to aiford a good hold for the fingers.

In using the stopper constructed as described, the elastic portion B being inserted in the rim 0 and the lug C made to register with the grooves A, the stopper is thrust into the bottle until the lugs 0 come to register with the grooves A when it is turned, the lugs passing into the grooves A and locking against the inclined walls A The removal of the stopper is of course accomplished by reversing the action of putting it in.

Our invention has merit even apart from its positive locking feature, and we claim it as our invention even when not provided with the lugs C.

Having now described our invention, what we claim as new, and desire to secure by Letters Patent, isp l. The combination of the cork -holding thimble 0 having an inwardly-turned top flange C with the metal cap-piece D having a depressed bead D upset to clamp the thimble-flange C between it and the cap-piece.

2. The combination of the cork -holding thimble C having an inwardly-turned top flange C and outwardly-extending lugs C with the metal cap-piece D having a depressed bead D upset to clamp the thimble-flange C between it and the cap-piece.

3. The combination of the cork holding thimble C having an inwardly-turned top flange C with the metal cap-piece D having a depressed bead D upset to clamp the thimble-flange 0 between it and the cap-piece, and a corrugated outer flange D ALBERT S. LAMBERT. EDMUND HOFFMAN. l/Vitnesses:

THOMAS W. TRENCHARD, J. VVARD RICHARDSON. 

